14282-78-1
14282-78-1 structure
- Name: 5-Methly-2-thiophenecarboxylic acid
- Chemical Name: 4-Methylthiophene-2-carboxylic acid
- CAS Number: 14282-78-1
- Molecular Formula: C6H6O2S
- Molecular Weight: 142.176
- Catalog: Pharmaceutical intermediate Heterocyclic compound Thiophene compound
- Create Date: 2018-03-14 08:00:00
- Modify Date: 2025-09-01 10:46:44
| Name | 4-Methylthiophene-2-carboxylic acid |
|---|---|
| Synonyms |
5-Methyl-2-thiophenecarboxylic acid
5-methylthiophene-2-carboxylic acid 4-Methyl-2-thiophenecarboxylic acid 2-Thiophenecarboxylic acid, 4-methyl- 5-Methly-2-thiophenecarboxylic acid 4-Methyl-thiophene-2-carboxylic acid 4-METHYLTHIOPHENE-2-CARBOXYLIC ACID 2-Thiophenecarboxylic acid, 5-methyl- MFCD00089284 |
| Density | 1.3±0.1 g/cm3 |
|---|---|
| Boiling Point | 277.2±20.0 °C at 760 mmHg |
| Melting Point | 122-126 °C(lit.) |
| Molecular Formula | C6H6O2S |
| Molecular Weight | 142.176 |
| Flash Point | 121.5±21.8 °C |
| Exact Mass | 142.008850 |
| PSA | 65.54000 |
| LogP | 2.03 |
| Vapour Pressure | 0.0±0.6 mmHg at 25°C |
| Index of Refraction | 1.591 |
| Symbol |
GHS07 |
|---|---|
| Signal Word | Warning |
| Hazard Statements | H317-H319 |
| Precautionary Statements | P280-P305 + P351 + P338 |
| Personal Protective Equipment | dust mask type N95 (US);Eyeshields;Faceshields;Gloves |
| Hazard Codes | Xi: Irritant; |
| Risk Phrases | R36 |
| Safety Phrases | S26-S37/39 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | 3 |
| HS Code | 2934999090 |
| Precursor 8 | |
|---|---|
| DownStream 9 | |
![1-(4-methyl-[2]thienyl)-propan-1-one structure](https://image.chemsrc.com/caspic/073/106265-82-1.png)
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |